Inventor · disambiguated record
Michael Hui Du
Also filed as: DU MICHAEL H · DU MICHAEL HUI
29 granted patents·5 pending applications·396 citations·filing 2002–2024
97Inventor score
Top patents by PatentIndex Score
34 records- 0196US6688860B2Protector for electrical submersible pumpsSCHLUMBERGER TECHNOLOGY CORP·Filed 2002·Granted Feb 10, 2004·75 cites·24 claims
- 0295US7217107B2Protector for electrical submersible pumpsSCHLUMBERGER TECHNOLOGY CORP·Filed 2005·Granted May 15, 2007·27 cites·18 claims
- 0395US6981853B2Protector for electrical submersible pumpsSCHLUMBERGER TECHNOLOGY CORP·Filed 2003·Granted Jan 3, 2006·44 cites·15 claims
- 0491US10145496B2Rotary shouldered connections and thread designSCHLUMBERGER TECHNOLOGY CORP·Filed 2015·Granted Dec 4, 2018·8 cites·20 claims
- 0589US7806670B2Protector for electrical submersible pumpsSCHLUMBERGER TECHNOLOGY CORP·Filed 2007·Granted Oct 5, 2010·13 cites·14 claims
- 0685US12163417B1Integrated drilling systemSCHLUMBERGER TECHNOLOGY CORP·Filed 2023·Granted Dec 10, 2024·1 cites·17 claims
- 0784US7654315B2Apparatus, pumping system incorporating same, and methods of protecting pump componentsSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted Feb 2, 2010·31 cites·13 claims
- 0882US8061430B2Re-settable and anti-rotational contraction joint with control linesDU MICHAEL H·Filed 2009·Granted Nov 22, 2011·31 cites·20 claims
- 0981US7469748B2Submersible pumping systemSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted Dec 30, 2008·27 cites·20 claims
- 1080US7741744B2System and method for protecting a submersible motorSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted Jun 22, 2010·19 cites·17 claims
- 1179US9528357B2Protector for electrical submersible pumpsDU MICHAEL H·Filed 2010·Granted Dec 27, 2016·3 cites·2 claims
- 1278US7549849B2Tandem motorsSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted Jun 23, 2009·11 cites·19 claims
- 1377US8752635B2Downhole wet mate connectionWANG DAVID WEI·Filed 2006·Granted Jun 17, 2014·17 cites·9 claims
- 1476US12435618B2Integrated drilling systemSCHLUMBERGER TECHNOLOGY CORP·Filed 2024·Granted Oct 7, 2025·0 cites·17 claims
- 1576US10160033B2Cold rolling devices and cold rolled rotary shouldered connection threadsSCHLUMBERGER TECHNOLOGY CORP·Filed 2015·Granted Dec 25, 2018·2 cites·10 claims
- 1674US7806190B2Contraction joint systemDU MICHAEL H·Filed 2007·Granted Oct 5, 2010·13 cites·24 claims
- 1773US8061429B2Systems and methods for downhole completionsDU MICHAEL H·Filed 2008·Granted Nov 22, 2011·13 cites·12 claims
- 1871US8807966B2Pump motor protector with redundant shaft sealDU MICHAEL HUI·Filed 2008·Granted Aug 19, 2014·8 cites·9 claims
- 1970US8496064B2System and method for engaging completions in a wellboreDU MICHAEL H·Filed 2007·Granted Jul 30, 2013·12 cites·24 claims
- 2070US7182584B2Motor protectorSCHLUMBERGER TECHNOLOGY CORP·Filed 2004·Granted Feb 27, 2007·16 cites·38 claims
- 2169US10662722B2Threaded connections and downhole tools incorporating the sameSCHLUMBERGER TECHNOLOGY CORP·Filed 2018·Granted May 26, 2020·1 cites·20 claims
- 2267US7640979B2System for well loggingSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted Jan 5, 2010·10 cites·18 claims
- 2364US9863215B2Shear valve system and methodologySCHLUMBERGER TECHNOLOGY CORP·Filed 2014·Granted Jan 9, 2018·2 cites·13 claims
- 2460US11389858B2Cold rolling devices and cold rolled rotary shouldered connection threadsSCHLUMBERGER TECHNOLOGY CORP·Filed 2018·Granted Jul 19, 2022·0 cites·20 claims
- 2560US7404446B2Well tool protection system and methodSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted Jul 29, 2008·5 cites·32 claims
- 2654US7595573B2Submersible electric motor terminated for auxiliary toolsSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted Sep 29, 2009·3 cites·21 claims
- 2754US2014322038A1Pump Motor Protector with Redundant Shaft SealSCHLUMBERGER TECHNOLOGY CORP·Filed 2014·Application pending·0 cites
- 2851US2009152817A1Energized dynamic seal used in oil well equipmentSCHLUMBERGER TECHNOLOGY CORP·Filed 2007·Application pending·0 cites
- 2946US8863832B2Orientable eccentric downhole assemblyDU MICHAEL HUI·Filed 2010·Granted Oct 21, 2014·1 cites·18 claims
- 3044US10677017B2System and methodology for utilizing a flow control valveSCHLUMBERGER TECHNOLOGY CORP·Filed 2014·Granted Jun 9, 2020·0 cites·17 claims
- 3144US2011100112A1Piezo-based downhole flow meterSCHLUMBERGER TECHNOLOGY CORP·Filed 2009·Application pending·0 cites
- 3241US7231986B2Well tool protection system and methodSCHLUMBERGER TECHNOLOGY CORP·Filed 2004·Granted Jun 19, 2007·3 cites·10 claims
- 3340US2011168406A1Downhole hydraulic coupling assemblySCHLUMBERGER TECHNOLOGY CORP·Filed 2011·Application pending·0 cites
- 3437US2009078429A1System and method for engaging well equipment in a wellboreSCHLUMBERGER TECHNOLOGY CORP·Filed 2008·Application pending·0 cites
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